nHomotaxis(Biol) Similarly in arrangement of parts; -- the opposite of heterotaxy.
Century Dictionary and Cyclopedia
nhomotaxisA term introduced into geology by Huxley, to express the idea of similarity of arrangement or of order in the fossiliferous deposits of various regions, while not necessarily including that of contemporaneity in the same: opposed to heterotaxis.
Chambers's Twentieth Century Dictionary
nHomotaxishom′o-tak′sis; (geol.) similarity of order in organic succession, a term suggested by Huxley as a substitute for contemporaneity (q.v.)